Muscle PerformanceNCT07507695
Acute Effects of Patellar Tendon Ultrasound on Countermovement Jump Performance
A study testing therapeutic ultrasound Group in people with Muscle Performance, run by Muş Alparslan University.
Trial summary
This randomized, double-blind, controlled trial aims to investigate the acute effects of therapeutic ultrasound applied to the patellar tendon on vertical jump performance in healthy university students. Read more about this study
- Who is it for?
- Ages 18 to 35 yearsHealthy volunteers can take part
- Conditions the study is for
- Muscle Performance
- What is being tested?
- therapeutic ultrasound Group
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 40 participants
- Where
- No sites listed yet
- Study dates
- 20 Apr 2026to 1 May 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 35 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy university students aged 18-35 years
- No history of lower extremity injury or surgery in the past 12 months
- No current musculoskeletal or neurological disorders affecting the lower limbs
Who cannot join
- History of patellar tendon injury or knee pain
- Contraindications to therapeutic ultrasound (e.g., skin lesions, open wounds at the knee, or implanted electronic devices)
- Any cardiovascular, neurological, or musculoskeletal condition that may affect jump performance
- Use of medications that could affect neuromuscular function (e.g., muscle relaxants)
Trial locations and contacts
No sites are listed yet. Contact the study team or a site near you to ask about taking part.
About this study
Official title: Acute Effects of Therapeutic Ultrasound Applied to the Patellar Tendon on Countermovement Jump Performance: A Randomized Controlled Trial
This randomized, double-blind, controlled trial aims to investigate the acute effects of therapeutic ultrasound applied to the patellar tendon on vertical jump performance in healthy university students. Therapeutic ultrasound is widely used in physiotherapy to influence soft tissue properties through thermal and mechanical effects; however, its immediate impact on explosive lower-extremity performance and neuromuscular function remains unclear.
Participants will be randomly assigned to either a therapeutic ultrasound group or a sham ultrasound (placebo) group. In the intervention group, therapeutic ultrasound will be applied to the patellar tendon using a frequency of 1 MHz and an intensity of 1.5 W/cm² in continuous mode for 5 minutes. In the control group, a sham ultrasound procedure will be performed using the same device and duration without delivering therapeutic energy. Both the participants and the outcome assessor will be blinded to group allocation.
Read more
Vertical jump performance will be evaluated using the countermovement jump (CMJ) test recorded with the My Jump 2 smartphone application. In addition, quadriceps muscle strength will be measured using a hand-held dynamometer, and knee joint position sense will be assessed using a joint position reproduction test. All measurements will be conducted before and immediately after the intervention.
This study will provide evidence regarding whether therapeutic ultrasound applied to the patellar tendon can acutely influence explosive performance, muscle strength, and proprioception in healthy individuals.
Read the detailed description
This randomized, double-blind, controlled trial aims to investigate the acute effects of therapeutic ultrasound applied to the patellar tendon on vertical jump performance, quadriceps muscle strength, and knee joint proprioception in healthy university students. Therapeutic ultrasound is a commonly used physiotherapy intervention that can induce thermal and mechanical effects on soft tissues; however, its immediate impact on explosive lower-extremity performance and neuromuscular function has not been fully established.
A total of healthy participants aged 18-35 years will be recruited and screened according to predefined inclusion and exclusion criteria. Eligible participants will be randomly assigned to either a therapeutic ultrasound group or a sham (placebo) ultrasound group. The intervention group will receive therapeutic ultrasound applied to the patellar tendon at a frequency of 1 MHz, intensity of 1.5 W/cm², in continuous mode for 5 minutes. The sham group will undergo the same procedure without delivery of therapeutic energy. Both participants and the outcome assessor will be blinded to group allocation, ensuring a double-blind design.
Outcome measures will be recorded immediately before and within one minute after the intervention. Vertical jump performance will be assessed using the countermovement jump (CMJ) recorded with the My Jump 2 smartphone application. Quadriceps muscle strength will be measured using a hand-held dynamometer, and knee joint position sense will be evaluated using a joint position reproduction test. Participants will perform three trials for each measure, with 60-second rest intervals between trials, and the best value will be used for analysis. Familiarization trials will be conducted prior to testing to minimize learning effects.
This study will provide evidence on whether therapeutic ultrasound applied to the patellar tendon can acutely influence explosive performance, quadriceps strength, and proprioception in healthy individuals, which may inform clinical and sports performance applications.
- Conditions
- Muscle Performance
- Being tested
- therapeutic ultrasound Group
- Keywords
- Therapeutic Ultrasound, Patellar Tendon, Countermovement Jump, Acute Effect, Performance
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
therapeutic ultrasound GroupOther
The use of therapeutic ultrasound on the patellar tendon in healthy individuals.
| Study group | Role | What they receive |
|---|---|---|
| Ultrasound Group | Active comparator | The use of therapeutic ultrasound in healthy individuals Receives: Other: therapeutic ultrasound Group |
| sham Group | Sham comparator | Use of sham ultrasound in healthy individuals Receives: Other: therapeutic ultrasound Group |
What is being measured
The primary outcome is the main question the study is designed to answer.
Countermovement Jump Height
Vertical jump performance will be assessed using the countermovement jump (CMJ) test recorded with the My Jump 2 smartphone application. Participants will perform three maximal jumps with their hands placed on their hips to eliminate arm swing, and the highest jump height (cm) will be used for analysis.
Measured: Immediately before and immediately after the intervention (within 1 minute following the ultrasound or sham ultrasound application)
Secondary outcomes (2)
Knee Joint Position Sense
Knee joint position sense will be assessed using a joint position reproduction test to evaluate proprioception. Participants will actively reproduce a predetermined knee flexion angle without visual feedback, and the absolute angular error (degrees) between the target and reproduced position will be recorded.
Measured: Immediately before and immediately after the intervention
Quadriceps Muscle Strength
Quadriceps muscle strength will be measured using a hand-held dynamometer. Participants will perform maximal voluntary isometric knee extension while seated with the knee flexed at 90 degrees. The highest value obtained from three trials will be recorded in kilograms (kg) for analysis.
Measured: Immediately before and immediately after the intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Apr 2026
- Study start20 Apr 2026 (estimated)
- Primary completion27 Apr 2026 (estimated)
- Study completion1 May 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Muscle PerformanceStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Investigator, Outcomes assessor
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Muş Alparslan University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Cengiz TAŞKAYA, Principal investigator, Muş Alparslan UniversityBurhan TAŞKAYA, Principal investigator, Muş Alparslan University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07507695
- Sponsor's protocol ID
- Therapeutic Ultrasound
- Status last verified
- Mar 2026
- First submitted
- 27 Mar 2026
- Last updated
- 2 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 2 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Acute Effects of Therapeutic Ultrasound Applied to the Patellar Tendon on Countermovement Jump Performance: A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT07507695
- Acronym / sponsor ID
- Therapeutic Ultrasound
- Conditions
- Muscle Performance
- Keywords
- Therapeutic Ultrasound, Patellar Tendon, Countermovement Jump, Acute Effect, Performance
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Muş Alparslan UniversityUniversity, hospital or other
- Study start
- 20 Apr 2026 (estimated)
- Primary completion
- 27 Apr 2026 (estimated)
- Study completion
- 1 May 2026 (estimated)
- First posted
- 2 Apr 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This randomized, double-blind, controlled trial aims to investigate the acute effects of therapeutic ultrasound applied to the patellar tendon on vertical jump performance in healthy university students. Therapeutic ultrasound is widely used in physiotherapy to influence soft tissue properties through thermal and mechanical effects; however, its immediate impact on explosive lower-extremity performance and neuromuscular function remains unclear.
Participants will be randomly assigned to either a therapeutic ultrasound group or a sham ultrasound (placebo) group. In the intervention group, therapeutic ultrasound will be applied to the patellar tendon using a frequency of 1 MHz and an intensity of 1.5 W/cm² in continuous mode for 5 minutes. In the control group, a sham ultrasound procedure will be performed using the same device and duration without delivering therapeutic energy. Both the participants and the outcome assessor will be blinded to group allocation.
Vertical jump performance will be evaluated using the countermovement jump (CMJ) test recorded with the My Jump 2 smartphone application. In addition, quadriceps muscle strength will be measured using a hand-held dynamometer, and knee joint position sense will be assessed using a joint position reproduction test. All measurements will be conducted before and immediately after the intervention.
This study will provide evidence regarding whether therapeutic ultrasound applied to the patellar tendon can acutely influence explosive performance, muscle strength, and proprioception in healthy individuals.
Detailed description
This randomized, double-blind, controlled trial aims to investigate the acute effects of therapeutic ultrasound applied to the patellar tendon on vertical jump performance, quadriceps muscle strength, and knee joint proprioception in healthy university students. Therapeutic ultrasound is a commonly used physiotherapy intervention that can induce thermal and mechanical effects on soft tissues; however, its immediate impact on explosive lower-extremity performance and neuromuscular function has not been fully established.
A total of healthy participants aged 18-35 years will be recruited and screened according to predefined inclusion and exclusion criteria. Eligible participants will be randomly assigned to either a therapeutic ultrasound group or a sham (placebo) ultrasound group. The intervention group will receive therapeutic ultrasound applied to the patellar tendon at a frequency of 1 MHz, intensity of 1.5 W/cm², in continuous mode for 5 minutes. The sham group will undergo the same procedure without delivery of therapeutic energy. Both participants and the outcome assessor will be blinded to group allocation, ensuring a double-blind design.
Outcome measures will be recorded immediately before and within one minute after the intervention. Vertical jump performance will be assessed using the countermovement jump (CMJ) recorded with the My Jump 2 smartphone application. Quadriceps muscle strength will be measured using a hand-held dynamometer, and knee joint position sense will be evaluated using a joint position reproduction test. Participants will perform three trials for each measure, with 60-second rest intervals between trials, and the best value will be used for analysis. Familiarization trials will be conducted prior to testing to minimize learning effects.
This study will provide evidence on whether therapeutic ultrasound applied to the patellar tendon can acutely influence explosive performance, quadriceps strength, and proprioception in healthy individuals, which may inform clinical and sports performance applications.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Ultrasound Group | Active comparator | Other: therapeutic ultrasound GroupThe use of therapeutic ultrasound in healthy individuals |
| sham Group | Sham comparator | Other: therapeutic ultrasound GroupUse of sham ultrasound in healthy individuals |
Who may qualify
- Ages
- 18 to 35 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- Healthy university students aged 18-35 years
- No history of lower extremity injury or surgery in the past 12 months
- No current musculoskeletal or neurological disorders affecting the lower limbs
Key exclusion criteria (4 listed)
- History of patellar tendon injury or knee pain
- Contraindications to therapeutic ultrasound (e.g., skin lesions, open wounds at the knee, or implanted electronic devices)
- Any cardiovascular, neurological, or musculoskeletal condition that may affect jump performance
- Use of medications that could affect neuromuscular function (e.g., muscle relaxants)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| therapeutic ultrasound GroupThe use of therapeutic ultrasound on the patellar tendon in healthy individuals. | Other | Ultrasound Group, sham Group |
Primary outcome
Countermovement Jump Height
Time frame: Immediately before and immediately after the intervention (within 1 minute following the ultrasound or sham ultrasound application)
Vertical jump performance will be assessed using the countermovement jump (CMJ) test recorded with the My Jump 2 smartphone application. Participants will perform three maximal jumps with their hands placed on their hips to eliminate arm swing, and the highest jump height (cm) will be used for analysis.
2 secondary outcomes
Knee Joint Position Sense
Time frame: Immediately before and immediately after the intervention
Quadriceps Muscle Strength
Time frame: Immediately before and immediately after the intervention
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Apr 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Cengiz TAŞKAYA principal investigator
Muş Alparslan University
Burhan TAŞKAYA principal investigator
Muş Alparslan University
Questions about this trial
What is this clinical trial studying?
A study testing therapeutic ultrasound Group in people with Muscle Performance, run by Muş Alparslan University.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 2 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Cengiz TAŞKAYA (05364811882, c.taskaya@alparslan.edu.tr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Countermovement Jump Height (time frame: Immediately before and immediately after the intervention (within 1 minute following the ultrasound or sham ultrasound application)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Apr 2026.